Add initial color management framework code

ICC profiles can now be specified in weston.ini for each output, or a CMS
implementation can optionally loaded from a pluggable module.

1 files changed, 174 insertions, 0 deletions

diff --git a/src/cms-static.c b/src/cms-static.c
new file mode 100644
index 00000000..be8e63eb
--- /dev/null
+++ b/src/cms-static.c
@@ -0,0 +1,174 @@
+/*
+ * Copyright © 2013 Richard Hughes
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and
+ * its documentation for any purpose is hereby granted without fee, provided
+ * that the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of the copyright holders not be used in
+ * advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission.  The copyright holders make
+ * no representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define _GNU_SOURCE
+#include <stdlib.h>
+#include <string.h>
+
+#include "compositor.h"
+#include "cms-helper.h"
+
+struct cms_static {
+	struct weston_compositor	*ec;
+	struct wl_listener		 destroy_listener;
+	struct wl_listener		 output_created_listener;
+	struct wl_list			 configured_output_list;
+};
+
+struct cms_configured_output {
+	char				*icc_profile;
+	char				*name;
+	struct wl_list			 link;
+};
+
+static void
+cms_output_created(struct cms_static *cms, struct weston_output *o)
+{
+	struct cms_configured_output *configured_output;
+	struct weston_color_profile *p;
+
+	weston_log("cms-static: output %i [%s] created\n", o->id, o->name);
+
+	/* find profile from configured list */
+	wl_list_for_each(configured_output, &cms->configured_output_list, link) {
+		if (strcmp (o->name, configured_output->name) == 0) {
+			p = weston_cms_load_profile(configured_output->icc_profile);
+			if (p == NULL) {
+				weston_log("cms-static: failed to load %s\n",
+					   configured_output->icc_profile);
+			} else {
+				       weston_log("cms-static: loading %s for %s\n",
+						  configured_output->icc_profile, o->name);
+				       weston_cms_set_color_profile(o, p);
+			}
+			break;
+		}
+	}
+}
+
+static void
+cms_notifier_output_created(struct wl_listener *listener, void *data)
+{
+	struct weston_output *o = (struct weston_output *) data;
+	struct cms_static *cms = container_of(listener, struct cms_static, destroy_listener);
+	cms_output_created(cms, o);
+}
+
+static void
+cms_module_destroy(struct cms_static *cms)
+{
+	struct cms_configured_output *configured_output, *next_co;
+
+	wl_list_for_each_safe(configured_output, next_co,
+			      &cms->configured_output_list, link) {
+		free(configured_output->name);
+		free(configured_output->icc_profile);
+		free(configured_output);
+	}
+	free(cms);
+}
+
+static void
+cms_notifier_destroy(struct wl_listener *listener, void *data)
+{
+	struct cms_static *cms = container_of(listener, struct cms_static, destroy_listener);
+	cms_module_destroy(cms);
+}
+
+static char *output_icc_profile;
+static char *output_name;
+
+static void
+output_section_done(void *data)
+{
+	struct cms_configured_output *configured_output;
+	struct cms_static *cms = (struct cms_static *) data;
+
+	if (output_name == NULL || output_icc_profile == NULL) {
+		free(output_name);
+		free(output_icc_profile);
+		output_name = NULL;
+		output_icc_profile = NULL;
+		return;
+	}
+
+	weston_log("cms-static: output %s profile configured as %s\n",
+		   output_name, output_icc_profile);
+
+	/* create an object used to store name<->profile data to avoid parsing
+	 * the config file every time a new output is added */
+	configured_output = malloc(sizeof *configured_output);
+	memset(configured_output, 0, sizeof *configured_output);
+	configured_output->name = output_name;
+	configured_output->icc_profile = output_icc_profile;
+	wl_list_insert(&cms->configured_output_list, &configured_output->link);
+	output_name = NULL;
+	output_icc_profile = NULL;
+}
+
+WL_EXPORT int
+module_init(struct weston_compositor *ec,
+	    int *argc, char *argv[], const char *config_file)
+{
+	struct cms_static *cms;
+	struct weston_output *output;
+
+	weston_log("cms-static: initialized\n");
+
+	/* create local state object */
+	cms = malloc(sizeof *cms);
+	if (cms == NULL)
+		return -1;
+	memset(cms, 0, sizeof *cms);
+
+	wl_list_init(&cms->configured_output_list);
+
+	/* parse config file */
+	const struct config_key drm_config_keys[] = {
+		{ "name", CONFIG_KEY_STRING, &output_name },
+		{ "icc_profile", CONFIG_KEY_STRING, &output_icc_profile },
+	};
+
+	const struct config_section config_section[] = {
+		{ "output", drm_config_keys,
+		ARRAY_LENGTH(drm_config_keys), output_section_done },
+	};
+
+	parse_config_file(config_file, config_section,
+			  ARRAY_LENGTH(config_section), cms);
+
+	cms->destroy_listener.notify = cms_notifier_destroy;
+	wl_signal_add(&ec->destroy_signal, &cms->destroy_listener);
+
+	cms->output_created_listener.notify = cms_notifier_output_created;
+	wl_signal_add(&ec->output_created_signal, &cms->output_created_listener);
+
+	/* discover outputs */
+	wl_list_for_each(output, &ec->output_list, link)
+		cms_output_created(cms, output);
+
+	return 0;
+}